Asked by tweety
The element lithium has bcc packing with a body-centered cubic unit cell. The volume of the unit cell is 4.32 x 10-26 L. Calculate the density (g/cm3) of the element.
Answers
Answered by
DrBob222
There are two Li atoms per unit cell for a bcc structure.
mass = 2*massofmole Li/6.022 x 10^23 = mass of unit cell. You know the volume.
density = mass/volume.
mass = 2*massofmole Li/6.022 x 10^23 = mass of unit cell. You know the volume.
density = mass/volume.
Answered by
DrBob222
Note that the problem asks for density in g/cc so you must change the volume in liters to cc in order to obtain the unit g/cc.
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